During
the early stages of the tournament, you'll see a few
hyperaggressive players. These are players who think
that they have to build up a stack of chips quickly.
Most of these players will bust out early. You need
to quickly become aware who these players are at your
table and use extra caution if they are acting behind
you. If they are in front of you, use isolation raises
to get heads up with them whenever you have a solid
hand.

When your opponents get short stacked, you expect
them to begin playing weaker hands. This starts happening
in volume in the later stages of the tournament. They
don't always have a lot of choice and many of them
will begin to feel pressure to "do something."
So the short stacks will loosen up, but the big stacks
often get more aggressive whenever they're competing
against a short stack.